Window cleaner



E. DE MARCO.

WINDOW CLEANER.

APPLICATION FILED AUG.I3. 1921.

Patented Oct. 17, 1922.

2 SHEETSSHEET I.

life/7 /0 De Mama ay m a ATTORNEY E. DE MARCO.

WlNDOW CLEANER.

APPLICATION FILED AUG.13, 1921.

1,431,934, Patented Oct. 17, 1922.

2 SHEETSSHEET 2.

INVENTOR. Eye/7 De Marc 0 ATTORNE .5

Patented @ct. 17, 1222.

UNETEE fiTATEfi EUGENIO DE MARCO, OI" CLEVELAND, OHIO.

WINDOW CLEANER.

Application filed. August 13, 1921. Serial lilo. 492,032.

To all 0m it may concern:

it known that I, EUGnNIo DE MARCO, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in lVindow Cleaners, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

. The present invention relates to a window cleaning device, and more particularly, to a device suitable for street cars or other vehicles where com ressed air or the like is available. Essentially the device consists of operating cleaner members which are connected to a suitable power piston and provision is made whereby the cleaners operate only as they move downwardly over the window. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

. The anexed drawing and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing:-

' Fig. 1 is a diagrammatic elevational view of the device; Fig. 2 is a longitudinal sectional view on the line 22 of Fi 1; Fig.

3 is a sectional view similar to ig. 2 but showing the device in a difi'erent. posit-ion; Figs. 4 and 5are enlarged sectional views showing the operating mechanism in the position shown in Figs. 2 and 3 respectively;

Fig. 6 is an enlarged view of the detail;

Fig. 7 is a sectional view on the line. 7-7 of Fig. '4; Figs. 8 and 9 are perspective views of details of construction. I 1

In Figs-1 and 2 there is shown the usual windowsash 1 together with the window sill 2 below which is mounted the operating cylinder 3 for the present device. This operating cylinder ismounted below the window sill and is provided with a piston 4' which has a coiled spring 5 between the lower side of the piston and the bottom 6 of the cylinder to act as a buffer so that the piston is stopped on its downward movement by'the action of this spring. The device is suitably operated by compressed air and is connected to a suitable air pipe 7 by means of a four-way valve 8 which allows air to be forced into the cylinder through pipes 9 and 10 either at the top or at the bottom of the same, the air in the other end being exhausted through the valve at the same time, and thus by throwing the valve, the piston may be moved up or down as desired, by the operator.

This piston has a connecting rod 11 provided with a head 12 which has two apertured cars 13 and two bell-cranks or toggles 14 are pivotally connected to the ears and to each other by a pin24: as best shown in Figs. 4 and 5. To theupper free ends of these bell-cranks 14: are connected two rods 16 which are provided with stops 17 between which are mounted coiled springs 18 which act as buffers for the upward movement of the piston. These two rods extend upwardly through suitably packed glands 19 and extend upwardly adjacent the window sash 1 but on opposite sides of the same.

v An upper double piston 20 is loosely mounted about the piston rod-.11 and this piston 20 carries a head 21 which hasftwo lugs 22 which are apertured as at 23 to receive the pin 24 acting as the pivot for the bell cranks. This piston 20 is balanced, and tends to remain fixed in the pipe 50 as to hold the pivotal pin 24 of the bell cranks to allow themto move in or out under the action of the lower piston, before travelling in the cylinder.v

At their upper ends these rods 16 are pro vided with crossmembers25. having. rubber wiping strips 26 which are 'adapted to engage with the glass of the window to wipe the same. It will be seen from. Figs. 4 and 5 that when the cylinder is moved up? wardly, the pressure on the-bellcranks or toggle membersis adapted to move them inwardly at the-topand thus spread the .two rods so that the window cleaners or.

their upward movement. When however, a the air is turned into, the top. ofthe cylinder to force the device upwardly, the power is adapted to throw the bellcrank or toggle.

members outwardly and. thus throw the.

rods toward each other as shown inF 3- and 5. This bringsthewiping strips into contact with the window glass sothat the same is wiped clean during the downward movement of the piston.

The present device is particularly adapted for use in street cars where a motormans window is subject to snow, rain, and also condensation or fog on the inside. The device may be connected through the pipe to the usual compressed air line for the braking system and the motorman is thus able by throwing the four-way valve to wipe the window whenever necessary and thus keep a clear vision ahead. In certain instances it may be desirable to clean the window on the up stroke and this could be done by either reversing the entire mechanism or by changing the toggle pivots but the present construction is enerally preferred. As the device is simp e in operation and has but few working parts, it is easy to keep in order and it operates satisfactory and simply from the usual air supply tank on the car. It is of course possible to substitute any other convenient power source for the air supply being only necessary to maintain the toggle arrangement so that the wiping strips contact with. the glass only upon downward movement of the device.

The movement of the lower piston could. be

hand. actuated or moved from any moving source, the piston and toggle arrangements being retained. The loose piston is of course merely a brake or semi-stationary member to hold the pivot for the toggles stationary,

while they are moved to throw the rods in or out.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided: the means stated by any of the following, claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention 1.. Inn window cleanin device, the com bination of a window sasi and pane, a cylinder mounted below said window, a movable piston in, said, cylinder, a connecting rod connected to said piston, two rods car rying cleaners lying on oppositesides of said window pane and extending into said cylinder, and toggle mechanism connectin said 'two rods and said connectin ro whereby movement of saidpistonis a apted to move said rods inwardly or outwardly before moving, the same along the window 133116..

2. In a. window cleaning device, the combination of a; window sash and pane, a cylinder mounted. below said window, a movable piston in said cylinder, a. connecting rod connected to said piston, two rods carrying cleaners lying"v on opposite sides of said-window pane and extending into said; cylinder, afloose-piston mounted in said. cylinder about. said connecting rod andhaving a head, toggle mechanism connected-f to said connecting rod, said loose piston head and said rods and adapted to first move said rods and cleaners into or out of engagement with the window pane and then along the same.

3. In a window cleaning device, the combination of a window sash and pane, a cylinder mounted below said window, a movable piston in said cylinder, a connecting rod connected to said piston, two rods carrying cleaners lying on opposite sides of said window pane and extending into said cylinder, a loose piston mounted in said cylinder about said connecting rod and having a head, two toggle members pivotally connected together and to said loose piston head, said toggles being connected at one end to said cleaner carrying rods and at the other to said: connecting rod so as to rock under initial movement of said piston to move the cleaners away from. or against the window pane before movement along the same.

4. In a window cleaning device, the combination of a window sash and pane, a cylinder mounted below said window, a movable piston in said cylinder, a connecting rod connected to said piston, two rods carrying cleaners lying. on opposite sides of said Window pane and extending into said cylinder, a second piston mounted loosely in said cylinder about saidv rod and having a head, two bell cranks pivotally connected together and to said head of saidv second piston as a. pivotal point, and pivotally connected at. one end to said connecting rod and at the other with. said cleaner rods, said second piston. being adapted to hold said bell crank rods against movement in said cylinder long enough to allow said cranks to pivot and rock said rods and cleaners into or out of contact with the pane before movement along the pane.

5. In a window cleaning device, the com.- binationof a. window sash and pane, a cylinder mounted in substantial. alignment withthe same, a. piston movably mounted in and operable by fluid pressure in said cylinder, acontrol valve for admission of suchfluid pressure, a. connecting rod connected to said piston, two rods carrying cleaners lying;

on opposite sides of said window pane and; extending into said cylinder, and toggle mechanism connecting said two rods and said connecting rod whereby movement of said pistoni isadapted. tomove said rods-inwardly: or outwardly relatively to the pane" before moving, the same along the windowane- 6; In a window cleaning" device, the com bination'of. a. window sash. and pane, a cyl inder mounted: insubstantial alignment Wlth.

the same, a: piston. movably mounted inand operable. by fluid pressure imsaid cylinder, aconlol" valive. for admission of such fluid? pressure, a connecting rod connected to said piston, two rods carrying cleaners lyin on opposite sides of said window pane an extending into said cylinder, a piston loosely mounted in said cylinder about said piston rod and having a head, toggle mechanism connected to said piston rod, said second piston head and said rods and adapted upon reciprocation to first move said rods and cleaners into or out of engagement with the window pane and then along the same.

7. In a window cleaning device, the combination of a window sash and pane, ac linder mounted in substantial alignment wlth the same, a piston movably mounted in and operable by fluid pressure in said cylinder, a control valve for admission of such fluid pressure, a connecting rod connected to said piston, two rods carrying cleaners lying on opposite sides of said window pane and extending into said cylinder, a piston loosely mounted in said cylinder about said connecting rod and having a head, two toggle members pivotally connected together and to said loosely mounted piston head, said toggles being connected at one end to said rods and at the other to said connecting rod so as to rock under initial movement of said piston to move the cleaners away from or against the window pane before movement along the same.

8. In a window cleaning device, the combination of a window sash and pane, a cylinder mounted in substantial alignment with rod and having a head, two bell cranks pivotally connected together and to said head of said second piston as a pivotal point, and pivotally connected at one end to said connect ing rod and at the other with said cleaner rods, said loosely mounted piston being adapted to hold said bell crank rods against movement in said cylinder long enough to allow said cranks to pivot and rock said rods and cleaners into or out of contact with the pane before movement along the pane.

Signed by me, this 3rd day of August,

EUGENIO DE CO. 

